Biomass Compost Effects On Soil Phosphorus And Crop Growth Promoting

Through soil fertility experiments, pot experiments and field experiments, with the monitoring of soil phosphorus and total phosphorus content, analysis of the phosphate-solubilizing effect of compost and fertilizer, as well as the impact on plant growth. And adopt the single factor experiments, orthogonal experimental study the traits of phosphate-solubilizing micro-organisms.(1)Through experimental soil study phosphate-solubilizing effect of fertility composting,compound fertilizer and the two inoculated to phosphate-solubilizing bacteria, the results showed that: compost with peat soil according to the proportion of 1:2 mixture of fertilizer can greatly impetus to the release of soil fixed phosphorus, the mixed fertilizer of compost and peat soil by a certain ratio at the same time inoculated to phosphate-solubilizing bacteria turned out a better result of phosphorus solution.(2)Through pot experiments study phosphate-solubilizing effect of composting, compound fertilizer and the two inoculated to phosphate-solubilizing bacteria,the result showed that: pot experiments under the conditions of compost and peat soil by a 2:1 ratio mixture of fertilizer inoculated phosphate-solubilizing bacteria has the highest rate of soil phosphate-solubilizing, up to 2.14%; composting, and with the peat soil mixed by 1:2 ratio of phosphate-fertilizer is also good results. Select the vegetables for the pot plant, and analysis of cabbage dry weight, leaf width and leaf length, phosphate-solubilizing bacteria inoculated composting facilities was better, five vegetables'dry weight compared with that of the control group increased 505%. Phosphate-solubilizing bacteria inoculated and non fertilization program compared to a certain extent increased the dry weight of green vegetables.(3) Through field experiment study phosphate-solubilizing effect of various compost application amount, different fertilizer and the two inoculated to phosphate-solubilizing bacteria, the result showed that: the increase use of compost, phosphate-dissolving rate is gradually increased, fertilizer increased to a certain level, increasing fertilizer, phosphate-dissolving rates have started to fall. Using compound fertilizer, fertilizer for the handling of phosphate-solubilizing bacteria inoculated soil phosphate-solubilizing rate is better than the non-vaccinated phosphate-solubilizing bacteria, in which the compost and peat soil mixed by 1:2 ratio of fertilizer is effective. Fertilizer in the same circumstances, a higher rate of compost in the phosphate-dissolving than compound fertilizer, composting inoculate phosphate-solubilizing micro-organisms 750g/m2 the highest rate of soil phosphate-solubilizing, up to 61.74%.(4)In the field experiments, composting and inoculation of aspergillus niger 1000g/m2 is the highest, compared with the control group increased by 56%. Using compound fertilizer processing, compost and peat 1:1 mixed phosphate-solubilizing bacteria in fertilization treatment inoculated vegetables dry weight is higher than the control group increased by 55%. For the phosphate-solubilizing bacteria inoculated composting, the lower the amount of compost the higher phosphorus responsiveness. Compost mixed with peat soil fertilizer, phosphorus responsiveness is higher than composting processing.(5) By a single factor, orthogonal design for soil culture experiment to explore the phosphate-dissolving bacteria in different conditions, namely, carbon source, temperature, phosphate-solubilizing bacteria inoculated bran amount, carbon source to add, the amount of soil moisture on the soil effective conversion rate of phosphorus and according to single-factor orthogonal experiment, obtained by the orthogonal experiment the optimal level of various factors are: temperature 32℃, the amount of inoculated phosphate-dissolving micro-organisms wheat bran 1.5g, glucose 4g, water content 30%, under those conditions the phosphorus conversion rate in the soil is 40.82%.